Emerson 250-400kVA manual UPS, to transfer back to Inverter

			UPS Alarm and Status Messages
Table 7	Liebert NXL alarm and status messages (continued)
Event Message		Event Definition	Recommended Action
		The UPS has re-transferred too many times and
		is now locked on bypass.
		The UPS attempts to perform an automatic
		transfer back to Inverter, if the reason for the
		transfer to bypass is determined by the controls to
		be automatically recoverable; for example, a	Press “SILENCE” to silence the audible alarm.
		temporary overload.
		The number of times the UPS attempts to recover	Press “RESET” to clear any active faults or alarms.
		from an automatic transfer to bypass is limited.	Provided there are no alarms or faults still present
Excess Auto		When the number of transfers exceeds the	that could prevent a transfer, press “Transfer,”
Rexfers		number allowable (default is 5 transfers per hour),	“UPS,” to transfer back to Inverter.
		the UPS remains on bypass, and display this	If the transfer is successful, press “RESET” to clear
		message.	the alarm. Otherwise, contact your factory-
		An example of a condition that could cause this	authorized service provider.
		alarm is cycling load to the UPS where the peak
		load exceeds the overload settings. The UPS
		transfers on the overload, re-transfers to Inverter,
		then the overload returns. Once this occurs 5
		times within one hour, the user must manually
		transfer the UPS back online.
			Press “SILENCE” to silence the audible alarm.
			Check the Module Output Meter and verify the
			output currents are normal, the kVA/kW
			percentages are less than 100%, and the Rexfer
		When the controls detect a high amplitude, short	Timeout is 00:00.
		duration overload condition on the output, the	Verify the Inverter box on the One-Line Display is
		static switch is turned on momentarily in parallel	green.
		with the Inverter to attempt to clear the condition.	Investigate any other active alarms or faults before
Excess Paralleling		If the fault clears, the controls turn off the static	attempting to clear this fault.
		switch and the load remains on Inverter. This fault	Press “RESET” to clear the fault.
		condition indicates the UPS pulse paralleled too	If the Event Window is clear, press “Transfer,”
		many times and is now locked on bypass (auto re-	“UPS” to transfer the load back to Inverter.
		transfers to Inverter are inhibited).	If the “UPS” button is grayed out, or pressing the
			“UPS” button does not transfer the unit back to
			Inverter, or if the UPS immediately transfers back to
			bypass, contact your factory-authorized service
			provider.
		This is a summary event that indicates a fuse has	Press “SILENCE” to silence the audible alarm.
		opened. There are several fuses that can cause
		this fault.	Check the One-Line Display and other indicators to
Fuse Fail		The Fuse Failure event is caused by one or more	determine the state of the unit and take appropriate
		fuses reporting a failed status. The UPS may or	action.
		may not transfer to bypass as a result of the failed	Contact your factory-authorized service provider.
		fuse.
			Press “SILENCE” to silence the audible alarm.
			Check the Inlet Air Temperature on the One-Line
			Display and verify the reading is accurate, i.e. is the
		The air flowing into the UPS is too warm.	room temperature warmer than normal?
Inlet Ovtemp		This alarm is self-clearing. When the condition is	If the room temperature is warmer than normal,
		no longer present, the alarm and any control	investigate and resolve the issue.
		activity tied to the alarm reverts to normal.	If the room temperature is normal, and the Inlet Air
			Temp reading on the One-Line Display is higher
			than normal, contact your factory-authorized service
			provider.

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